Mining-machine.



B. VIVIANI.

MINING MACHINE.

APPLICATION FILED IUNE23. m4.

Patented Sept. 21, 1915.

3 SHEETS-SHEET 1.

COLUMBIA PLANDGRAI'H co.. WASHINGTON. n

B. VlVlANl.

MINING MACHINE.

APPLICATION FILED JUNE 23, 1914.

PatentedSept. 21, 1915.

3 SHEETS-SHEET 2.

B. VIVIANI.

MINING MACHINE.

APPLICATION FILED JUNE 23. I914.

I 1 MN Patented Sept. 21, 1915.

3 SHEETS-SHEET 3 'Jlllllllllllllllllllllllllllllllllllll m u w W 1 m M I 5.5:::iiiaa wi/lmaoowi lLZAEHNT ore BENIGNO VIVIANI, or MONESSEN, ,PnNNs LvANIa.

MINING-MACHINE.

To all whom it may concern:

Be it known that I, BENIGNO VIVIANI, a citizen of the United States, residing at lwfonessen, in the county of \Vestmoreland and State of Pennsylvania, have invented new and useful Improvements in Mininglllachines, of which the following is a specification.

lhis invention relatesto mining machine and especially to machines for miningcoal, the object of the invention being to produce a machine of the character described embodying one or more rotary coal digging or cutting elements combined with means for driving thev same, means for adjusting or feeding the cutting elements to their work, and a blast generating element which will drive away from the operator any dust and gases which may accumulate at the point of operation of the machine thereby greatly facilitating the work of the operator and attendants and materially increasing the amount of work which may be performed as compared with the old means now in use forthe same purpose,

\Vith the above and other objects in view, the invention consists in the novel construction, combination and arrangement of parts, as will be hereinafter more fully described, illustrated and claimed.

inthe accompanying drawings: Figure 1 is a sidcelevation of a mining machine embodying the present invention. Fig. 2 is an end view of the same illustrating the gearing for driving the cutting or digging mechanism and simultaneously actuating the blower or fan for driving away the gases. Fig. 3 is a plan view of the machine. Fig. 4 is a plan view of one of the cutter wheels. Fig. 5 is an enlarged detail view of one of the cutting bits. Fig. 6 is a detail vertical longitudinal section taken in line with the rack bar. Fig. 7 is a detail perspective view of the rack bar. Fig. 8 is a detail perspective view of the lower portion of the supporting frame or brace, showing the means for shifting the rack bar.

In carrying out the present invention I employ a frame or brace comprising a stand ard 1 the upper portion of which is tubular and internally threaded to receive a threaded extension 3 which may be screwed into and out of the member 1 so as to lengthen and shorten the frame, the member 3 being provided with a hole 4 extending transversely therethrough to receive a pin 5 detachable I Specification of Letters lPatent'. Pateted S t 21 1,5515

'Application filed .Tune 23, 1914. Serial No. 846,849.

therefrom-and forming a handle by means of which the member 3 may be turned within themember 1 so as tolengthen andshorten the frame or brace to enable it to be adjusted to shafts or galleries ;of different sizes; Swivel heads 6 and? are employed at 0pposlte ends of the said frame or braceto enable the members 1 and 3 to beturned relatively :to each other forlengthening and shortening'the frame .and also to swing the cutting mechanism hereinafter particularly described.

Journaled on the member 1' adjacent to the lower end thereof is a sprocket wheel 8 around which passes an endless chain 9 driven by said sprocket wheel 8. Under the sprocket wheel 8, the-frame 1 is provided with a horizontally ex -ending guide 10 in which is slidable horizontal rack bar 11 having the rack face 12., This rack bar has its opposite end portions offset as shown at 15 in a different plane from the rack face of the rack bar 11 soas to allow for-introducingthe'mechanismby which the rack bar 11 is moved longitudinally.

The mechanism for shifting the rack bar 7 comprises apinion .16 which is ournaled in ears or extensions '17 of theguide 10, said pinion 16 meshing-with the rack face 12 and the cutters hereinafter described to their work. The frame 1 is provided with an opening 20 in line with the guide 10 so that the rack bar 11 passes through both the guide 10 and the frame 1.

The shaft 21 of the end sprocket wheel 14 is extended above and below said sprocket wheel and has fast thereon upper and lower rotary cutters 22 and 23. One of these out ters is shown in detail in Fig. 4 wherein it will be seen that each of said cutters is provided along its periphery with ratchet shaped projections 24 having a face 25 substantially radial to the center of the wheel, and a detachable cutting bit 26 projecting from said face. Each cutting bit 26 is provided with a threaded shank 27 which screws into a threaded socket in the radial face 25 of each projection 24. In this way the cutting teeth are made detachable and may be renewed as often as necessary. Both cutters are simultaneously rotated by the chain 9 which passes around the sprocket wheelli. I

The sprocket wheel 8 in addition to the sprocket teeth 8 onthe periphery thereof is provided with a bevel gear face 28 and with said face 28 a bevel wheel 29 meshes, said bevel wheel being provided with a laterally extending crank handle 30 enabling it to be turned by hand. The wheel 29 is journaled on a stud shaft 31 on the frame 1 and the outer portion thereof is provided with a spur gear periphery which meshes with a pinion 32 fast on the shaftSS of a spur gear wheel 34:,the shaft 33 being carried by the frame 1. The wheel 34 in turn meshes with a spur pinion 35 journaled on a stud shaft 36 on the frame 1, and said pinion 35 has fixedly related thereto a fan or blower 37 which by reason of the gearing just referred to is revolved at a sufficiently high rate of speed to carry off all dust and gases accummulating around the point of operation of the machine, thus purifying the immediately surrounding air and enablingthe operation of the machine to be conducted more expeditiously.

From the foregoing description it will now 'be seen that the machine as a whole may be adjusted to and fastened in place within a mine and that the rotary cutters may be continuously driven and that they may be adjusted by means of the rack and pinion mechanism and fed uniformly and with precision to their work, and furthermore, the rack bar may be swung in a horizontal plane sothat the cutters 22 and 23 may sweep from, side to side in the cutting operation, Simultaneously with the'actuation ofthe cutting mechanism, the fan or blower is driven at. a speed which will insure the carrying off of any dust and gases fiopies of this patent may be obtained for which might otherwise accumulate in the immediate vicinity of the operator and attendants.

What I claim is V 1. In a mining machine, the combination of a supporting standard, a rack bar shiftable lengthwise and angularly movable in a plane perpendicular to said standard and supported and guided by the latter, a rotary cutter journaled on one end of said rack bar, a sprocket wheel having a fixed relation to said cutter, an idler sprocket Wheel journaled on the other end of said rack bar, a driving sprocket wheel journaled on said standard, a chain driven by the last named'sprocket wheel and passing around the other sprocket wheels, actuatingmeans for said driving sprocket wheel mounted on said standard, and means for naled on the other end of said rack bar, a

driving sprocket wheel journaled on said standard, a chain driven by the last named sprocket wheel and passing around the other sprocket wheels, actuating means for said driving sprocket wheel mounted on said standard, and means-for shifting said rack bar.

In testimony whereof I affix my signature in presence of two witnesses.

BENIGNO VIVIANI.

lVitness'es p H. N. ODBERT, J oHN' CAVELLS.

five cents each, by addressing the Commissioner of Patents, Washington, D. G. v I 

